Top two Intelligence Index models take about twice as long per task as Astra
Artificial Analysis data shows Opus 5.5 and Sonnet 5.5 score highest but average 13–15 minutes per task, while Muse Wonder scores 52.4 in 6.8 minutes and GPT-6 Astra takes about 8.1 minutes; the author uses this to pitch a latency-routing gateway.
The two top models on the Intelligence Index take about twice as long per task: Claude Opus 5.5 and Sonnet 5.5 (@AnthropicAI) vs. Muse Wonder (@Meta). Muse Wonder finishes an average task in 6.8 minutes with a 52.4 score. Opus 5.5 takes 13.2 and Sonnet 5.5 takes 15.3, scoring 57.6 and 56.0. Muse Spark 1.3 and GPT-6 Astra (@OpenAI) follow at 8.1. When someone is waiting on the answer, minutes can matter more than a few index points. Merge Gateway lets you send latency-sensitive requests to the fast model and the hard ones to the strong one, behind one endpoint. Scores via http://artificialanalysis.ai, week of Oct 12.